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  1. Use rectifier winding for 6.3V DC heater?
  2. Voltage Regulators Zener / Gas Reg
  3. Looking for first tube amp kit.
  4. UK input voltage question
  5. 1sh29b
  6. 6G2 amp - volume and tone play up on one input only
  7. One channel grainy sound
  8. anybody know 6BY5 plate resistance ?
  9. SE 6550
  10. Yaqin MC-100b Volume pot
  11. Pair of possible MC step ups - octal mount
  12. My Mighty Midget
  13. Conrad Johnson MV75 "update circuit drawing"
  14. Cheap Red LED bias on ecc83/12ax7
  15. stoneAmp
  16. Project thread: KT88 PP amp
  17. I need the voltages or schematic for a Magnavox 177.55 amp
  18. Different PSE output designs - which to use?
  19. Toroidal (adding a winding)
  20. Kondo Souga - audition
  21. a incar tube/valve line driver
  22. Before I punch the holes.. A quartet of EL84?
  23. Tubes Home Theater 4+1
  24. DAC direct out, not enough gain, help me build a driving stage.
  25. ultra linear aikido with linearizing pentode
  26. Scott 299
  27. OPTs With Multiple Secondaries
  28. Over Four Tons Of Tubes
  29. L channel lower output?
  30. 16LS Amp by S5 Electronics Questions
  31. Heathkit WM-5
  32. 6BL8 not on roll chart
  33. CJ PV-5 PS rebuild
  34. Attenuator for passive pre (LEAK ST 20)
  35. Help ID tubes Plz
  36. Data sheet and load line question
  37. Trouble with Silver to Black face twin mod.
  38. Grommes S35 booster amp output?
  39. dc filament heater - high impedance const. voltage
  40. Schematic for Modwright SWL 9.0se Preamp
  41. GZ37 substitutes
  42. output attenuation
  43. My humming home made tube amp
  44. Shared Cathodes 300b
  45. Bogen CHB-35 for Music...
  46. correctly connecting PT for 110/220 volts
  47. voltage divider
  48. "Bypass caps" and their effect on perceived sound
  49. Repair of Cayin HA-2 Tube Headphone Amp
  50. Best Drive for EL34
  51. Needing Schematic for Grommes LJ7 please.
  52. 6550C v. KT88
  53. ECC81 MU-Follower consumption
  54. Locating hum source
  55. c3g self oscillation problem - a newbie needs help!
  56. Voice of music console help
  57. One tube radio
  58. Triodes with better "look&feel"
  59. HV Supply
  60. Will this arrangement impact the input impedence of the cathode follower?
  61. Measuring preamp output impedance
  62. Capacitor from 120VAC to ground
  63. I have power but no sound???
  64. Using a function generator with a tube amp?
  65. What resistors to use on KT88s tubes?
  66. Opinions on Raysonic sp-200 + Raysonic 168 CD
  67. Lab power supply for testing tubes
  68. Could really use some help here!
  69. Help~ GU50 ?
  70. Some Power Supply Help
  71. newbies beware of lampizator srpp pdf
  72. Headphone output
  73. Has anyone played around with this as an amp front end?
  74. Help for Dynavox VR-70E
  75. Heathkit TT-1 (testing a 199, 99 tube)
  76. Tube And Transformer I/V Converter For Differential Current DAC
  77. Volume increases as amp warms up
  78. New 6V6 Build - Suggestions Needed
  79. Tubes Numbers
  80. VTL
  81. Visit to KR audio Prague 20120921
  82. Where did he posted it?
  83. Problems with PT325.2i
  84. What phono preamp with Dynaco MKIII
  85. opinions on supporting a past sale/trade deal
  86. Series connection of regulator tubes
  87. Preamp buzzes when volume is at zero?
  88. Hrrrrmphhhff. PSU design error and how to cope with it
  89. 300B fixed bias specs
  90. Battery filament for 4P1L
  91. Need pro help with this tube amp.
  92. Need help with UTC transformer
  93. Very interesting 300b design
  94. How to understand the power output in this case?
  95. K12G Help
  96. all dht se PX4
  97. multiple output transformers per channel
  98. What would you change in this schematic? (PP amp)
  99. Anyone know where to get this type of breadboard?
  100. moscode 600 tube recommendations
  101. Should I use two separate OPTs for parallel output tubes?
  102. custom Tube chassis vendor
  103. VLS631 Thermal Delay
  104. 6au6 preamp stage
  105. Recognize this tubes...
  106. need help for my new amp: 6G6G driver & 807 SE
  107. Anyone heard of radiometal for transformer core?
  108. BCF-2
  109. Glowing Plates of Doom
  110. Modding Aikido to non-Aikido such as SRPP?
  111. DN2540 plate load.
  112. Help! Did my power cable blow his tubes?
  113. 211 amp SRPP driver
  114. Tubelab SE problem
  115. tube to replace opamps in cd player
  116. Jolida 302b started to crack/pop once a minute
  117. why it doesn't work - 300B SE power amp
  118. Trio KW-70 schematic also known as WX-400 under kenwood name
  119. New DC to AC to high voltage AC idea?
  120. LED bias for 6N1P driver
  121. DIY tube amp general inquiry
  122. 6as7 Aikido headphone amplifier
  123. Cold tubes in warm amp = smoke?
  124. Keroes: Direct-Coupled amplifier
  125. Tube ID help please.
  126. exactly HOW does a tube amp work? or a vacuum tube?
  127. David Berning's zh-230 - whats going on here?
  128. EICO HF86 scratch build question please
  129. what to do with a 12W 600ohm to 4/8 ohm output transformer?
  130. Telewatt VS71M
  131. Yamamoto 09S 300B SE Amp Problem
  132. Marantz-9
  133. 6V6 amp question
  134. Wood chassis
  135. My first project SE(T) into high end audio.
  136. Supermalloy for the Power transformer?
  137. Can I build a screen reg. with IXYS 10M45?
  138. Modified DynacoMkIV
  139. Refurbising Conrad Johnson Premier One
  140. Would using a 16ohm speaker damage my SE output transformers?
  141. Grommes/PE S-35 questions
  142. Concertina phase inverter with LED bias - is this completely wrong?
  143. Parafeed turn-on delay
  144. I'm looking for 6an8 (as V1) schematics
  145. New Project - EL84 PP and preamp - suggestions welcome
  146. The sound of modern transformers compared with vintage gear
  147. Determining the core cross sectional area, Afe, for SE OPT
  148. HT power supply high?
  149. under-run push pull
  150. 12B4 Linestage Woes
  151. Transcendent Sound Mini-Beast
  152. A Question About Positive Feedback
  153. Help with opera consonance M100plus
  154. Just received 2x PT Choke OT. best implementation ?
  155. Just received 2x PT Choke OT. best implementation ?
  156. Mystery Valve ID
  157. Oddball OT with extra secondary winding
  158. Help with Multi Section Can Cap replacement
  159. 600V bench variable supply to test transmitting valves
  160. Heater-cathode voltage spec interpretation
  161. Tell me why this wont work.
  162. headphone amp for Senns HD600
  163. Transformer orientation and suggestions.
  164. 12AU7 stereo SE mini-amp build!
  165. allen type 20a schematic
  166. 2010 lemon year for EH 6922 tubes
  167. Chinese GU50 PP
  168. Gain, Vpp and attenuation at each stage
  169. 6n14p headphone amp
  170. Heater Lifter
  171. KT88 & 6550 Pentode power output?
  172. Biasing Improved Williamson
  173. Lowering the Volume Control on Tube Amps
  174. Got the Hum out!! Thanks All
  175. How hot KT88 get? Anybody take a reading?
  176. Broskie Unbalancer
  177. Phase splitting transformer design
  178. Red plate KT88
  179. 6N16B preamp
  180. Eimac 450th nos
  181. how much clearance above tubes for KT88 enclosure
  182. Cathode preheating???
  183. RIAA Question - Power
  184. Linearity of Red RCA 5692
  185. What gauge enclosure for KT88 AMP?
  186. Output Transformer Issue???
  187. Maggie 8802 placement issue
  188. Can you recommend a tube tester?
  189. 6550 tube protection socket
  190. PT laminations are usable as OT laminations ?
  191. Are These Authentic Russian Military 1578 Vacuum Tubes?
  192. Amp ID Please
  193. Help for Main Transformer Spec for CCDA
  194. Switching SE and balanced inputs/outputs
  195. kt88 PP rectifier.
  196. How much Blue glow is ok?
  197. Recommendations on How To mono a pre amplifier?
  198. 6H6pi curves available?
  199. 1p24b
  200. help, Built from scratch Kalamazoo 2 noise
  201. 5CZ5/5BQ7A single ended amp
  202. Hopefully a simple question.
  203. 211 tube recommendations
  204. Need HELP with TUBE IMP
  205. Another unknown tube
  206. Triode Bias 101
  207. Bogen MO-200A transplant /conversion
  208. 5U4 o bridge rectifier
  209. Choosing the right transformer
  210. V-Cap Help
  211. Older tubes sound better
  212. 6J7 preamp
  213. Menygue mini/music angel amp
  214. Driving a Behringer INuke Nu1000
  215. cathode follower ecc88 on 60volt
  216. Docs for Heathkit AA-23?
  217. 45 tube amp schematic
  218. Old TO-R s15u, Should i fix it?
  219. Tube ID
  220. VTL driver tube question
  221. Fun with junk EL84 SE
  222. Enclosure ideas
  223. Burn in procedure for NOS necessary?
  224. Strange Lorenz ECC81 12AT7
  225. Amplifier first start up; Plays tone of signal generator with no speakers!
  226. Reports of the death of Audiophool have been greatly exaggerated
  227. help me identify some vintage tubes // need suggestions for possible applications!
  228. Lowering cost of audio output transformer
  229. Source for transformers in Europe
  230. morgan Jones HT caps & Anode Loads
  231. Tuning Negative feedback
  232. Hickok reference 6L6 for calibration..
  233. SET-NO FEEDBACK amplifier performance
  234. Stereo class A 6+6W - 2x 6L6G 1 x 6N2P
  235. Console Amplifier Pull:Voltages over Spec
  236. Help! My EL34B based amp arced at full volume.
  237. MUZAK 50's tube amp
  238. Tube break-in?
  239. Custom power tranny specs recommendations for 300B pse monoblocs
  240. mosfet source follower output stage.
  241. Winter upgrade project - new heating unit
  242. 6KM8 amp
  243. Power and output transformers to ground.
  244. Help with this schematic? B+? B++?
  245. What to do with this old amp? suggestions please.
  246. DIY CAT SL1 preamp
  247. Phase inverter, your comments welcomed!
  248. Basic Bias Question for PP Amp
  249. Oddwatt 5751/6550
  250. Please help me to identify Telefunken PCC ...

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